The Instant Messenger bag from Powerbag features a removable 6000 mAh rechargeable battery. The bag offers three internal charging connectors for micro and mini USB plus an Apple 30-pin connector. The battery itself has a USB port for an additional device with its own cable.

The bag holds laptops up to 15-inches and also as a secondary storage area for tablets. Together the Instant Messenger holds up to a 15-inch MacBook Pro and an iPad, for example.

The bag in general has ample storage compartments. One area of interest in the side plastic clips buckle under the bag's flap. A little different design that offers a cleaner look and won't catch on to things as walking by.

Powerbag's big feature, however, is that recharging system. The battery can be charged from within the bag via an external power port, or the battery can be removed and plugged in. The obvious advantage here is users can charge their electronic devices while they travel.